Sony Music and UMG say Suno's new v6 models still infringe their copyright

Sony Music Entertainment and Universal Music Group have filed a new lawsuit against AI music generator Suno, alleging that its newest v6 models still infringe on their copyright, Variety reports.

The lawsuit challenges the narrative Suno has told about its latest models, which are the first released since the company signed licensing deals with Warner Music Group and BMG. While Suno used licensed material to build the v6 lineup, Sony Music and UMG, in a filing obtained by Music Business Worldwide, take issue with the company's acknowledgment that the models were also trained on users' "interactions" with the service. The labels interpret this to mean outputs and preference signals derived from prior models that were built by copying their recordings without authorization.

Under that interpretation, both companies claim Suno could be liable for infringing at least 60,202 sound recordings, exposing it to as much as $9 billion in damages under US copyright law, plus up to $2,500 for each instance in which Suno allegedly circumvented YouTube's anti-downloading technology to scrape songs.

In a statement to Engadget, Suno said the claims remain fundamentally flawed on both the facts and the law, reaffirming that its goal is to let more people make new music. The company said v6 was trained on content licensed from partners WMG, BMG and Believe, along with community interactions and preference signals, plus its team's accumulated learnings.

The new suit builds on an earlier lawsuit filed against Suno by Sony Music, UMG and WMG, and follows a July 2026 hack of Suno's data that revealed the company had scraped millions of songs and lyrics from platforms including YouTube Music, Deezer and Genius to train its earlier models. Suno has previously defended such scraping as fair use. Alongside the v6 release, the company discontinued support for its older models.